Oracle列加密

加密函数

create or replace function
encrypt_des(p_text varchar2, p_key varchar2) return varchar2 is
v_text varchar2(4000);
v_enc varchar2(4000);
raw_input RAW(128) ;
key_input RAW(128) ;
decrypted_raw RAW(2048);
begin
v_text := rpad( p_text, (trunc(length(p_text)/8)+1)*8, chr(0));
raw_input := UTL_RAW.CAST_TO_RAW(v_text);
key_input := UTL_RAW.CAST_TO_RAW(p_key);
dbms_obfuscation_toolkit.DESEncrypt(input => raw_input,key => key_input,encrypted_data =>decrypted_raw);
v_enc := rawtohex(decrypted_raw);
dbms_output.put_line(v_enc);
return v_enc;
end;

解密函数

create or replace function decrypt_des(p_text varchar2,p_key varchar2) return varchar2 is
v_text varchar2(2000);
begin
dbms_obfuscation_toolkit.DESDECRYPT(input_string => UTL_RAW.CAST_TO_varchar2(p_text),key_string =>p_key, decrypted_string=> v_text);
v_text := rtrim(v_text,chr(0));
dbms_output.put_line(v_text);
return v_text;
end;

加密

SQL> select encrypt_des('liang', 'xssssxxsese') from dual;

ENCRYPT_DES('LIANG','XSSSSXXSESE')
--------------------------------------------------------------------------------
5DC5AC97C81ECEEF

解密
SQL> select decrypt_des('5DC5AC97C81ECEEF', 'xssssxxsese') from dual;

DECRYPT_DES('5DC5AC97C81ECEEF','XSSSSXXSESE')
--------------------------------------------------------------------------------
liang

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create table test_des (id int ,passwd varchar2(200));
insert into test_des values (1,encrypt_des('liang', 'xssssxxsese'));

SQL> select * from test_des;

ID PASSWD
---------- --------------------
1 5DC5AC97C81ECEEF

SQL> select id,decrypt_des(passwd, 'xssssxxsese') from test_des;

ID DECRYPT_DES(PASSWD,'XSSSSXXSESE')
---------- ---------------------------------------
1 liang